Okla. Stat. tit. 69 § 660
The boards of county commissioners may enter into cooperative agreements with the Oklahoma Turnpike Authority for the purpose of replacement, expansion or repair of functionally obsolete and structurally deficient bridges which cross over or under turnpikes. The expenditures for such projects will be from any federal, state or county public funds appropriated and earmarked for such purpose. Counties may apply for the expenditure of these earmarked funds for projects that have been requested by the board of county commissioners of the county where the bridge is located. Once approved by the Oklahoma Cooperative Circuit Engineering Districts Board, the Board will select and prioritize the bridge replacement projects based on criteria which shall include, but not be limited to, high traffic volume and current bridge safety assessments.
Okla. Stat. tit. 69, § 660